Saab named Jag· Registered
If you are talking about the square plastic pieces that hold the rails to the car then I bought new ones two years ago. I have no idea who made them but they were not a Saab or GM part. I got them at a paint and body shop. I gave them one of the old ones and they got me some right away. Apparently it's a fairly common item. So a body shop might be a good place to look.